Level controls

Boiler level control systems combine sensors, controllers, alarms and output devices such as valves or pumps to keep water level within a safe operating range. They can support simple on-off control, modulating control and wider two-element or three-element feedwater strategies depending on boiler size and load variation. Reliable level control is fundamental to safer boiler operation because low-water conditions, unstable feedwater response and poor alarm handling all increase boiler house risk. Spirax Sarco level controls are used for automatic level management, low-water protection and high-water alarm duties where visibility, repeatability and maintainability matter together. These products are typically specified as part of a broader electronic boiler control platform that may also cover TDS blowdown, conductivity monitoring and operator communication. They are especially relevant where the boiler house needs more stable feedwater response across changing demand rather than basic switch-only level indication.